cut, enteric cavity (ccelenteron) ; gtli, 

 gonotheca; hth, hydrotheca; /, litho- 

 cyst; m. bd, medusabud; mnb, manu- 

 brium; msgl, mesogloea; mth, mouth; 

 p, perisarc; P. i, 2, 3, polyps; rod. c, 

 ^L radial canal; /, tentacle; vl, velum. 



